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Puengtang, Chaowalit
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Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences

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Antimicrobial Activities and Painting Application of Pigmented-Producing Actinobacteria Isolated from Rhizospheric Soils of Mosses (Taxithelium nepalense (Schwägr.) Broth. and Barbula indica (Hook.) Spreng.) Urtgam, Sittichai; Thananoppakun, Kanjana; Puengtang, Chaowalit; Sumpradit, Tawatchai; Thuankul, Bantita; Thurnkul, Naruemol
HAYATI Journal of Biosciences Vol. 31 No. 4 (2024): July 2024
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.31.4.652-662

Abstract

In the survey of biodiversity of actinobacteria associated with mosses (Taxithelium nepalense (Schwägr.) Broth. and Barbula indica (Hook.) Spreng.), certain strains of pigment producing actinobacteria were isolated and purified on SCA and incubated at 30°C for 1 week. Based on deep-shade color of actinobacterial pigments, 4 strains were collected and used for painting color preparation. To evaluate the antimicrobial activities, the crude extracts were prepared from 4 actinobacterial strains and tested with Escherichia coli PSRU-01 and Staphylococcus aureus PSRU-01. The results indicated that the crude extracts of C7, C13, C15 and D13 could not inhibit growth of E. coli PSRU-01, but S. aureus PSRU-01 was inhibited. Two fungal testers, including Colletotrichum sp. PSRU-01 and Fusarium sp. PSRU-01, were completely inhibited by the crude pigment extracts of C13, C15 and D13. Based on phylogenetic results, the actinobacterial strains were closely related to Streptomyces californicus (C7, 100% identity), Streptomyces bungoensis (C13, 99.8% similarity), Streptomyces humi (C15, 99.9% similarity), and Streptomyces rectiverticillatus (D13, 99.8% similarity). They also shared phenotypic characteristics with Streptomyces. The cultivated cells of actinobacteria on broken-milled rice were used for pigment extraction and followed by determination of the extracted pigments for mixing with acrylic color in the shade violet, green, orange and pink colors. Application of actinobacterial pigments in painting is the first report and it is an innovative utilization of actinobacterial pigments in non-scientific field in Thailand.
Isolation, Identification, Antimicrobial Activities, and Application of the Crude Pigmented Extract of Soil Actinobacteria in Handicraft and Painting Urtgam, Sittichai; Puengtang, Chaowalit; Nakthong, Muthita; Sa-ngat, Pijittra; Sirisan , Prattana; Sumpradit , Tawatchai; Thurnkul , Naruemol
HAYATI Journal of Biosciences Vol. 33 No. 1 (2026): January 2026
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.33.1.129-141

Abstract

A total of 21 actinobacterial strains were isolated from soils in Thailand. The selected strains were applied for pigment extraction before handicraft and painting application. Based on the color tones, 4 actinobacterial strains, namely B3 (yellow), B8 (violet), F4 (brown), and F9 (pink), were selected. Their antimicrobial activities against pathogenic bacteria and molds, including Escherichia coli PSRU-01, Staphylococcus aureus PSRU-01, Colletotrichum sp. NPJM -01, and Fusarium sp. PSRU-01 were tested using the agar well and the poisoned food techniques. Phylogenetic identification was analyzed on the basis of partial 16S rDNA sequence comparison for species delineation. They closed Streptomyces tendae 99.73% (B3), Streptomyces muensis 99.52% (B8), Streptomyces ardesiacus 99.38% (F4), and Streptomyces iakyrus 99.59% (F9). These strains were evaluated for their potential as colorants in handicraft clay and painting colors. Streptomyces pigment may be a naturally produced and eco-friendly alternative for handicraft and painting applications.
Co-Authors Nakthong, Muthita Sa-ngat, Pijittra Sirisan , Prattana Sumpradit , Tawatchai Sumpradit, Tawatchai Thananoppakun, Kanjana Thuankul, Bantita Thurnkul , Naruemol Thurnkul, Naruemol Urtgam, Sittichai